# Payment methods

> How card payment through Stripe works: your card is saved on the first purchase, the next one is one click, and you can add, change, or remove cards anytime.

- Canonical: https://help.enisa.ai/en/cuenta-y-facturacion/metodos-de-pago
- Updated: 2026-08-08
- Language: en-US
- Versión en español: https://help.enisa.ai/cuenta-y-facturacion/metodos-de-pago.md

On enisa.ai you pay by card through **Stripe**: your card is saved on your first purchase and later purchases are a single click. By the end you will know how to add, change or remove cards whenever you want.

Card details are always entered on Stripe's own payment page: we never see or store the full card number — only the brand, the last 4 digits, and the expiry date, so you can recognise the card.

## How your card gets saved

- **Automatically on your first purchase.** When you pay for your first analysis or application on Stripe's payment page, the card is saved. Your next purchase asks for nothing: one click.
- **Or in advance.** In **Settings → My account → Billing → Payment methods**, click **Add card**. We take you to a secure Stripe page, you enter the details, and you return to the application with the card saved.

## Managing your cards

1. Go to **Settings → My account → Billing → Payment methods**.
2. You will see each card with its brand, last 4 digits, and expiry.
3. **Make default**: choose which card is used for one-click purchases.
4. **Remove**: confirm by typing the last 4 digits. You can remove even your last card — your next purchase will simply ask for card details again on Stripe's payment page.

## Common issues

### What if I added a card but it doesn't show up?

If you cancelled on the Stripe page, nothing was saved — the application tells you so when you return. Repeat **Add card** and complete the form.

### What if my card has expired?

Add the new one and make it the default; then remove the old one if you like.

### What if my card was stolen?

Remove it here and ask your bank to block it. Removing it does not affect past purchases or their invoices.

### What if the payment failed?

It is usually a bank decline (limit reached, e-commerce disabled, pending authentication). Retry from the payment page; if it persists, try another card or write to hola@enisa.ai.